<?php
header("content-type:text/html;charset=utf8");
$username=$_POST['username'];
$password=$_POST['password'];
$con = mysqli_connect('localhost','root','root','shop');
$res = mysqli_query($con,"select * from user where username='$username' and password='$password'");
$row = mysqli_fetch_assoc($res);
if($row){
    $arr=[
        "meta"=>[
            "status"=>1,
            "msg"=>"登录成功"
        ]
    ];
}else{
    $arr=[
        "meta"=>[
            "status"=>2,
            "msg"=>"登录失败"
        ]
    ];
}
echo json_encode($arr);